版本号排序问题

算法思想：将版本号分割成对应的数组，对数组的每一项去进行比较
var arr = ['0.1.1', '2.3.3', '0.3002.1', '4.2', '4.3.5', '4.3.4.5']
arr.sort((a,b)=>{
    var items1 = a.split('.')
    var items2 = b.split('.')
    var len = Math.max(items1.length, items2.length)
    var k = 0
    for (let i = 0; i < len; i++) {
      let a1 = items1[i]
      let b1 = items2[i]
      if (typeof a1 === 'undefined') {
        k = -1
        break
      } else if (typeof b1 === 'undefined') {
        k = 1
        break
      } else {
        if (a1 === b1) {
          continue
        }
        k = Number(a1) - Number(b1)
        break
      }
    }
    return k
})
console.log(arr)